JPS59203045A - Looping device for belt-shaped object - Google Patents

Abstract

PURPOSE:To keep tightly a strip being always stretched and making a loop by installing a support-roller supporting an outer coil at the inner face of said coil. CONSTITUTION:An outer coil 4 is formed with a strip 1 being introduced into the inner part of a looper via a pinch roller inlet 2 and being held by an inside support roller 11. A strip winding over again on said outer coil is transported to an inner coil 7 at the point 5 via a guide-roller 12. The inner coil 7 being held at the inner face by another support-roller 6 as same as said outer coil 4 is transported on a fixed drum 9 equipped with a helical-turn device via point 8 after forming a coil of the same winding number is said outer coil 4. The strip moves along said helical-turn device on said drum 9 forming a helix and reaches the outlet of the looper, and finally moves to a pinch roller outlet 10.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to the accumulation and dispensing of strip material (IJ tube),
The present invention relates to a looping device capable of performing looping operations independently of previous or subsequent processing steps.

[Background of the invention]

If strips are to be processed continuously (for example, mild steel or plated with IJ tubes), a strip storage device is required for temporarily storing the strips.

Normally, such a strip storage device temporarily stores the already unwound strip, while unwinding the strip from the next coil, and placing the unwound end into the storage device first. By joining the rear end of the stored strip by welding or the like, it is possible to continuously supply the strip to the processing machine for the next process. Such a storage device for strips is
Known as a looper, one type of loop tower that moves on a vertical mount, and one type of loop car that runs on a horizontal track are widely used.

In addition to these, large amounts of strips (
The first method for storing strips (hereinafter referred to as strips) is
There is a looper as shown in the figure.

In this looper, the strip 1 is pushed out into the looper by an inlet pinch roller 2 and supported by an outer support roller 3 to form an outer coil 4 wound in several layers,
The inner coil 7 is further wound in several layers through the inner support row 26 through the fifth section. Thereafter, the matrix tube 1 passes directly through a portion 8, is guided to a cylinder 9, passes through a not-illustrated hem car turn section, and passes through an outlet pinch roller 1.
0. In this looper, the strip 1 forms the outer diameter coil 4 by the pushing force of the input side pinch roller 2, so the tension is almost all on the outer coil. There was a drawback that a pack ring occurred in the A section, making normal operation impossible. In order to eliminate this drawback, the entry side pinch roller 2
was brought as close as possible to Lupa, but there was a limit to its effectiveness. In addition, since the strip moves from the outer coil to the inner coil using its own rigidity at the section 5, the bending radius at that section must be relatively small, so it can be handled without problems such as bending. As a result, the applicable plate thickness of the looper was limited.

[Purpose of the invention]

is to provide.

[Summary of the invention]

The present invention focuses on the fact that the disadvantages of the looper arise from the fact that the strip is moved inside the looper in a non-tensioned state or in a slightly compressed state due to the pushing force of the pinch roller. , as shown in Figure 2,
A support roller is provided to support the outer coil on the inside, and a roller is also attached at the transition part from the outer coil to the inner coil. It has been discovered that this problem can be solved by applying torque and constantly maintaining the strip in tension.

According to this method, the strip moves under tension at all locations within the looper, so the IJ knob moves in an extremely stable state without buckling or buckling, making it possible for the looper to handle the strip. The thickness range can be greatly expanded.

[Embodiments of the invention]

Examples of the present invention will be described in detail below.

In FIGS. 2 and 3, the IJ tube 1 is guided into the looper through the input pinch roller 2, held by the inner support row 211, and forms the outer coil 4. The strip 1 wound in many layers around the outer coil 4 passes through a guide roller 12 and transfers to the inner coil 7 at 50 parts. Like the outer coil 4, the inner coil 7 is held on the inner side by a support low-shiro, and after forming a coil with the same number of turns as the outer coil 4, it passes through part 8 and is connected to a fixed coil with a hem cal turn part 21 attached. Move onto drum 9. The strip is helically wound on the helical turn 21 on the drum 9 and reaches the looper outlet, where it is transferred to the outlet pinch roller 10. In order to keep the strip 1 under tension inside the looper, a rotating frame 14 is fitted with a guide roller 12 and a support roller 11 for the outer diameter coil 4.
15 is driven by a motor 19 via gears 16 and 17 and a shaft joint 18, and is given a constant torque.

Further, in order to prevent the occurrence of slip between the strips in the coil, the support roller 11.6 has a link mechanism as shown in FIG. 4, and its radial position is controlled according to the stroke of the cylinder 24. do. That is, in the outer coil 4, the inner diameter portion of the strip passes through 5 and always transfers to the inner coil 7. Therefore, in order to maintain the shape of the outer diameter coil 4, the thickness of the strip transferred to the inner coil 7 is The center position of the support roller is expanded.

Similarly, a similar enlarging mechanism is attached to the support roller 6 of the inner coil.

Next, the operation of the looper of the device of the present invention will be explained. FIG. 5 is a diagram showing the storage process of the strip, and FIG. 5(a) shows a state in which the amount of storage (=storage amount) is the minimum. That is, both the outer coil and the inner coil are not completely thermally formed. (b) The figure shows support row 211 on the guide roller.
The figure shows a state in which the rotating frame 14 to which is attached has rotated about one rotation from the state shown in the figure (ω). In this state, the strip 1 is wrapped around the outer and inner coils approximately once, and the strip accumulates by this amount. Next, the state in which the rotary drum 14 has further rotated is shown in Fig. (C). In this way, it can be seen that the amount of drum accumulation changes (increases) as the rotary drum 14 rotates. If the amount of storage increases, but if the amount of storage decreases, the rotating frame may be rotated in the opposite direction.

That is, in FIG. 5, the amount changes as shown in (C)→(b)→(a), and the accumulated amount decreases.

Next, the necessary functions of the apparatus of the present invention will be explained according to FIG. In the outer coil 4 and the inner coil 7, the strips separated in several layers are rotated without relative slip, so that the following speed relationship is obtained.

几! If 凰=几l, then the rotational angular velocity ω8 of the rotating frame 14 is Vm-
It can be seen that it is proportional to Va. I'm in a rush state (Vm
>Vo), when 0g>0, the rotating frame 14 rotates forward and the storage amount increases. On the other hand, the release state (V<vn
), when ω8<0, the rotating frame 14 rotates in the opposite direction and the storage amount decreases.

To carry out such an operation, the strip must be kept under tension at all times, and for this purpose the rotating frame 14 is
It is sufficient to add the rotational torque Tr expressed by the following formula to
OTr=Rst・TI+R1t・T-;
(几t+ +RH)Tg (3) That is, the direction of this torque may be applied in the positive direction regardless of the direction of rotation of the rotating frame 140. The rotating frame 14
Because the loop rotates in the forward and reverse directions by pushing in and out,
The drive motor 19 of this rotating frame 14 needs to allow high slip like a torque motor.

Next, in order for the outer coil 4 and the inner coil 7 to maintain their shapes and prevent the IJ knobs from slipping against each other, it is necessary to change the radius R of the support roller. The relationship is expressed by the following equation.

According to equation (4), the radius position tR of the support roller is determined.

The cylinder 24 is controlled by the cylinder 24.

Also, in equation (4), ωnu≧ωB, ωspirit>0, so
The radius R11,, R,2 always increases and never decreases.

Therefore, it is necessary to reset the stroke at a certain time and return the stroke to the initial value, but as shown in FIG. If reset in this state, the strips cannot slip against each other within the coil.

In the above description, the strip moves from the outer coil to the inner coil, but it can be seen that the same effect can be obtained even if the direction of movement is reversed.

However, in this case, the amount of change in radius of the support roller in equation (4) is always negative, and it is necessary to move the support roller in the direction in which the radius decreases.

In the figure, 13 is an exit guide row 2, 20 is a fixed frame, 22 is an arm, 23 is a rotation fulcrum, and 25 is a link.

〔Effect of the invention〕

According to the present invention, (i) the IJ knob can be moved inside the looper in a stable state, which was previously impossible; It can be applied to a wide range of plate thicknesses.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional looper, FIG. 2 is a front view of the device of the present invention, FIG. 3 is a plan view thereof, FIG. 4 is a plan view of the expansion/contraction mechanism of the support row 2, and FIG. ). (b) and (C) are diagrams showing the looping situation of the device of the present invention, and FIG. 6 is a diagram for explaining the function. 11...Outer coil support roller, 12...Guide spear 10 Section 2 Section 3 Figure 4-Figure 5 Port (C Figure 6

Claims (1)

[Claims] 1. Consisting of a device for forming a moving strip into outer and inner coils of the same volume, and a device for drawing out the strip from the outer coil to the inner coil, The support roller and the pull-out device are attached to an integral frame, and a torque is applied to the frame in the loop storage direction, and while the strip material is always kept in tension, the inner support rollers of the outer coil and the inner coil are moved in the radial direction. 1. A looping device for a belt-shaped article, comprising means for controlling the position of the coil in response to changes in the outer diameter and inner diameter of the coil.